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2. Dyscalculia: Symptoms and Treatment of This Math Learning ...

   www.webmd.com/add-adhd/childhood-adhd/...

   Dyscalculia is a math learning disability or mathematics learning disorder. It's not unusual for a child to have a tough time with math homework now and then. But if they have problems with ...

3. Word problem (mathematics education) - Wikipedia

   en.wikipedia.org/wiki/Word_problem_(mathematics...

   In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation. As most word problems involve a narrative of some sort, they are sometimes referred to as story problems and ...

4. Collatz conjecture - Wikipedia

   en.wikipedia.org/wiki/Collatz_conjecture

   (more unsolved problems in mathematics) Directed graph showing the orbits of small numbers under the Collatz map, skipping even numbers. The Collatz conjecture states that all paths eventually lead to 1. The Collatz conjecture [a] is one of the most famous unsolved problems in mathematics. The conjecture asks whether repeating two simple arithmetic operations will eventually transform every ...

5. Dyscalculia - Wikipedia

   en.wikipedia.org/wiki/Dyscalculia

   Dyscalculia (/ ˌ d ɪ s k æ l ˈ k juː l i ə /) is a disability resulting in difficulty learning or comprehending arithmetic, such as difficulty in understanding numbers, learning how to manipulate numbers, performing mathematical calculations, and learning facts in mathematics.

6. Subtraction - Wikipedia

   en.wikipedia.org/wiki/Subtraction

   Subtraction is anti-commutative, meaning that if one reverses the terms in a difference left-to-right, the result is the negative of the original result. Symbolically, if a and b are any two numbers, then a − b = −(b − a). Non-associativity. Subtraction is non-associative, which comes up when one tries to define repeated subtraction. In ...

7. Mathematics - Wikipedia

   en.wikipedia.org/wiki/Mathematics

   Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics with the major subdisciplines of number theory, [1] algebra, [2] geometry, [1] and analysis, [3 ...